baber/WOPTO huggingface dataset:
Patent GB-1050448-A (GB)
IPC: C01B33/146
Abstract: 1,050,448. Silica sol, gel and powder; metal silicates; Ca phosphate and sulphate. NIPPON CHEMICAL INDUSTRIAL CO. Ltd. June 27, 1963, No. 25651/63. Heading C1A. A silica sol containing less than 8% SiO 2  is obtained by reacting siliceous slag containing more than 5% SiO 2  with acid, in an acid concentration of up to 4M and in an amount approximately equivalent to the Ca content of the slag. The acid may be HCI, HNO 3 , H 2 SO 4 , H 3 PO 4 , formic, acetic, oxalic or. citric acid, or by-product waste acids, NaHSO 4  or SO 2 . A temperature below 40‹ C. may be used. The sol is separated from the solid residue, and may be treated to give:- (a) Pure sol by treating with (a) an alkaline earth metal oxide, hydroxide, carbonate to pH 4-5 (Example 7), (including lime, dolomite or magnesite), preferably after adding H 3 PO 4  or phosphate to remove Ca as Ca phosphate, (b) an ion exchange resin, e.g. strong or weak acid cationic, or weak basic anionic (Example 8), or (c) organic solvents. (b) Finely divided silica by adding proteins, e.g. gelatine, glue or albumen, or anionic, cationic, or non-ionic surface active agents. (Examples 9-11). After filtration, Ca(OH) 2  may be added to the filtrate to precipitate Ca 2 HPO 4 . (c) Finely divided silicate (i) by adding alkali metal or alkaline earth metal hydroxide or carbonate or alkali metal silicate to give Ca silicate (Examples 12, 21) or (ii) when the slag was treated with H 2 SO 4 , by adding alkali and a soluble metal salt, e.g. of Ca, Mg, Ba, Sr, Zn. Pb, Cd, Cu (Example 13). (d) Silica gel by (a) adjusting the pH and allowing to stand, (b) heating gently, (c) ageing and dropping into aqueous NH 3 , (d) dispersing in oil, or (e) gelling in the presence of alkali metal salts (Examples 14-17). (e) Silica-alumina gel by gelling in the presence of soluble Al salts, e.g. sulphate, chloride, or kalum, which may remain from a slag of high Al content, or may be added to the slag-acid mixture or to the sol. The sol is then (a) heated and alkali added, (b) neutralized with alkali and Na aluminate added, or (c) gelled in an inert organic solvent. Alternatively, the silica gel may be immersed in an Al salt solution (Examples 18, 19). Ca phosphate is precipitated from the crude sol by removing S04, e.g. with BaCO 3 , then adding a suspension of Ca(OH) 2  (Examples 7, 20). Gypsum is precipitated from the crude sol obtained when slag was treated with HCl or HNO 3 , by adding H 2 SO 4  or sulphate; or, when H 2 SO 4  was used to treat the slag, gypsum is separated from the solid residue.
Patent GB-1050988-A (GB)
IPC: F04D29/50
Abstract: 1,050,988. Ventilators. FIRTH CLEVELAND Ltd. March 4, 1965 [March 4, 1964; Oct. 16, 1964], Nos. 9227/64 and 42379/64. Addition to 980,684. Heading F4V. [Also in Division F1] A ventilating fan comprises a flow machine as claimed in Claims 1 or 2 of the parent Specification, wherein the rotational axis of the rotor is spaced to one side of that of the inner unit, with one of the guide walls to the other side of the latter axis. Fig. 1 shows a ventilating fan comprising an outer unit 1 attached about a rectangular hole in a window pane G, and an inner unit 10 having end walls 11 and side walls 12, 13. The wall 12 carries a guide wall 22 shaped to co-operate with the fan rotor 17 to form a vortex having a core V whereby the air flows in the direction F from the inlet 14 to the outlet 15. The rotor 17 and its driving motor are carried by the inner unit 10 with the rotor axis 18 spaced from the common axis 16 of the inner and outer units. In order to draw air into the room instead of extracting it, the inner unit 10 is turned 180 degrees from the position shown. To close the fan, the inner unit is turned about 90 degrees to present either the inlet 14 or the outlet 15 to a closure plate 7. The lower edge of the plate 7 may be turned up to form a rainwater gutter. Walls 12, 13 may be omitted, their function then being performed by the plate 7 and a diametrically opposite plate carried by the outer unit. A detachable cowling 30, Figs. 4 and 5 (not shown), containing an electric heater for heating the incoming air, may be provided. The inner unit 10 may be turned into its three positions by a manually operated pull cord which may be the supply flex of the driving motor and incorporate a switch. Alternatively. the supply lead may be separate from the pull cord, the switching being done by microswitches actuated by projections as the inner unit is rotated. Where a heater is provided, a further micro-switch may be provided to control the heater, a fourth position of the inner unit adjacent the position for intake of cold air being provided for this purpose. The fan may be modi - fied to discharge from or into a duct.
Patent GB-1051515-A (GB)
IPC: C10G27/04
Abstract: 1,051,515. Sweetening petroleum hydrocarbons. GULF RESEARCH & DEVELOPMENT CO. March 31, 1965 [April 22. 1964], No. 13555/65. Heading C5E. The mercaptan content of a petroleum hydrocarbon is reduced by treating the hydrocarbon with molecular oxygen in the presence of catalytic amounts of one of the nitrogen oxides NO, NO 2 , N 2 O 3 , N 2 O 4 , or N 2 O 5 . Air may be used, at ambient temperature and pressure, as the source of oxygen. All the examples relate to the use of the oxide NO 2  or its equilibrium mixture with N 2 O 4 .
Patent GB-1051691-A (GB)
IPC: B60S1/48
Abstract: 1,051,691. Reciprocating pumps. JOSEPH LUCAS (INDUSTRIES) Ltd. Feb. 26, 1964 [March 13, 1963], No.9898/63. Heading F1A. A windscreen washer pump comprises a spring- loaded diaphragm 16 actuated by a cam 21 on a rotor 11 driven by the windscreen wiper motor, timing of operation being controlled by latch means engaging a spiral groove 35 in rotor 11. In operation, with the wiper motor operating, a switch is momentarily closed to energize a solenoid 24 to disengage a spring-loaded catch 22 from a plate 18 connecting diaphragm 16 to a cam follower 19. Spring 17 then moves plate 18 rightwardly for follower 19 to engage cam 21 and start pumping. At the same time, an arm 27, mounted on plate 18 by a pillar 26, is moved rightwards followed by a slidable member 29, spring-biased rightwardly and downwardly and having lugs 31 engaging ears 28 on arm 27, and also engaging parallelogram-shaped cams 32 on the housing. When lugs 31 reach the rightward end of cams 32, member 29 tilts downwardly so that a finger member 36 engages rotor groove 35. Pumping then continues until, as finger 36 approaches the outer end of groove 35, member 29 engages pillar 26 to move plate 18 and follower 19 to the left for re-engagement of catch 22. Finger 36 then rises on the inclined end portion of groove 35 and lugs 31 rise up the left-hand ends of cams 32, springs 33 and 34 then acting to return member 29 to its initial position.
Patent GB-1054523-A (GB)
IPC: C07K14/625
Abstract: 1,054,523. Obtaining insulin. VSESOJUZNY NAUCHNO - ISSLEDOVATELSKY INSTITUT EXPERIMENTALNOI ENDOKRINOLOGII. Oct. 25, 1965, No. 45009/65. Heading A5B. Crystalline insulin is obtained by adsorbing the insulin contained in an aqueous aqueousalcoholic or aqueous-actetone extract of pancreas at a pH above 7.4 or below 3.5 on a sulphonated cation exchange resin, selectively eluting the insulin with an alkaline aqueous/ acetone solution and treating the eluate in conventional manner to obtain crystalline insulin by fractional crystallization.
Patent GB-1225928-A (GB)
IPC: F01M11/00
Filed: 1969-09-23
Abstract: 1,225,928. Making piston rings. DANA CORP. 23 Sept., 1969 [3 Oct., 1968], No. 46825/69. Heading B3A. [Also in Division F2] An oil control piston ring comprises a split ring 10 having at least two annular bearing surfaces 23 formed by hard, wear-resistant material, e.g. molybdenum, inlaid in peripheral grooves 18 in the piston, the edges of the grooves being chamfered as at 32, 33, 39 and 40. Metallic oxides or metallic carbides, particularly chromium carbide and tungsten carbide may be used as the wear-resistant material. During manufacture, Figs. 2-6 (not shown), ring blanks (10) are clamped together on a rotary arbor (12), grooved by tool bits (20), sprayed with wear-resistant material (21) and, after surplus wear-resistant metal is removed by a grinding wheel (22), the lands (24, 25) are removed by cutting tools (34, 35) to provide the chamfers 32, 33, 39 and 40.
Patent GB-1226231-A (GB)
IPC: B01J3/06
Filed: 1969-02-07
Abstract: 1,226,231. Synthetic diamonds. BATTELLE MEMORIAL INSTITUTE. 7 Feb., 1969 [8 Feb., 1968], No. 6877/69. - Heading C1A. ' Synthetic diamonds are prepared by passing an alternating or chopped electric current between two facing electrodes in a bath of liquid containing free solvated electrons, e.g. alkali or alkaline-earth metal solutions in liquid ammonia, and at least one halogenated hydrocarbon derivative, e.g. CF 4 , CClF 3 , CCl 2 F 2 , CCl 3 F, CClF 2» CClF 2  and C 2 H 2 ClF 3 , one of the said electrodes being at least partly covered by a growth substrate i.e. a substrate having a structure enabling epitaxial growth of the diamond, the effective voltage of the said alternating current or the effective maximum voltage of the said chopped current being at least equal to the discharge value of the couple formed by the ions of the most electronegative halogen and by the most electropositive cations present, the substrate being placed at the positive electrode when a chopped current is used. The said substrate may be either a halogenated carbon compound having a carbon skeleton enabling epitaxial growth of the diamond, e.g. a compound forming a halogenated linear carbon chain such as polytetrafluoroethylene or a compound forming halogenated two-dimensional carbon lattices such as carbon monofluoride, or a crystallized substance having a crystalline network isomorphic or identical to that of the diamond, e.g. a polycrystalline mass of diamond powder, germanium,silicon, silicon carbide or a metal.
Patent GB-1227120-A (GB)
IPC: G06V30/10
Filed: 1969-05-14
Abstract: 1,227,120. Character recognition; A-to-D converters. INTERNATIONAL STANDARD ELECTRIC CORP. 14 May, 1969 [22 May 1968], No. 24542/69. Headings G4H and H4R In character recognition apparatus, shape elements (e.g. rows of a matrix decomposition) from the input character are compared with test elements to detect the test element most similar to the shape element in each case, the detected test elements being assigned to relevant possible characters on the basis of the location in the character area, the possible character with the largest number of test elements so assigned thereto being determined. Character recognition.-The character is scanned horizontally by a column of photocells, the outputs of the column at different times being inserted into respective columns of a shift register matrix store, after digitizing to .two levels, to reconstitute the character. The matrix is then shifted out vertically so each row of the matrix is passed in turn, parallel by bit, via a buffer register to each row of a resistor correlation matrix, the row of the latter giving the largest output sending a respective feature signal to a recognition network. The recognition network controls binary counters, one per possible character, and is itself controlled by a zone ring counter, so that arrival of a given feature signal causes incrementing of each counter corresponding to a possible character which has that feature in the zone currently being examined (by the correlation matrix). Finally, the counter with the highest count identifies the character. Each zone consists of 3 or 4 rows of the matrix store according to the character size. Before the matrix store is shifted out vertically, a horizontal projection of the character in the matrix store is produced in a height register, and this is shifted vertically with the above vertical shifting of the character in the matrix store. When the projection reaches the top of the height register (corresponding to the top of the matrix store), three AND gates detect this and the size of the projection to control the incrementing, and the counting scale, of a clock-driven row ring counter, outputs from which drive the zone counter. The digitizing after the photo-cells may alternatively be to 4 levels in 2-bit binary-coded form for storage in the matrix store, this form being reconverted to analogue at the output of the buffer register, the correlation matrix having two wires per row feeding a differential amplifier per row. Some feature signals may cause incrementing of counters by 2, and some may not be passed to a counter unless another feature signal occurred previously. The recognition network may have a separate section for each counter, or hardware may be shared. The recognition network may have extra logic to allow counting of defectively short strokes as well as normal length strokes. A-to-D converter.-Three potential dividers apply , ¢ and ¥ of an input voltage to respective flip-flops acting as threshold devices, the flip-flop outputs in true and inverse form being recoded to pure binary by gates.
Patent GB-1227567-A (GB)
IPC: H01R12/67
Filed: 1968-05-22
Abstract: 1,227,567. Electric couplings. A.B. ELECTRONIC COMPONENTS Ltd. 22 May, 1969 [22 May, 1968], No. 24431/68. Heading H2E. The subject-matter of this Specification is substantially the same as that described in Specification 1,227,566 but the claims are directed to the use of the spring and resilient pad to press the contacting tooth against the conductor.
Patent GB-1228140-A (GB)
IPC: A47G27/06
Filed: 1967-12-06
Abstract: 1,228,140. Carpet fasteners. VELVADEX (PLASTICS) Ltd. 6 March, 1969 [6 Dec., 1967], No. 55493/67. Addition to 1,179,232. Headings A4S and A4U. A modification of the carpet-fixing means, and the combination therewith of a stair tread and riser, set out in Specification 1,179,232, in which the carpet-fixing means comprises two separate members each consisting of a strip-like extrusion 1, 1<1> of semi-rigid resilient plastics material having a part 2 for fixing to a tread or riser and a part 6, 6<1>, including an angle of up to 90 degrees with the part 2 and having projections 7, 7<11> extending therealong to engage a fold zone 9 of a carpet.
Patent GB-1228371-A (GB)
IPC: G07F17/14
Filed: 1967-01-12
Abstract: 1,228,371. Road barriers. R. F. JARRETT. 9 April, 1968 [12 Jan., 1967], No. 1782/67. Heading E1G. [Also in Division G4] A road barrier operative in one direction only comprises freely rotatable rollers, or rollers enveloped by an endless belt, the grid being set into the surface of an inclined carriageway whereby wheel traction up the incline is prevented. The barrier may be associated with a car park, and means may then be provided for locking the rollers to allow access up the incline. As shown, a frame 12 in an inclined road surface 10 supports a grid of rollers each having a toothed end 20 engageable by a displaceable locking rack 22. The rack 22 is resiliently connected to links 26 actuated by a ram 40 controlled by a solenoid-actuated valve 48. To lock the rollers a switch 68 is closed, either manually or by coin freed apparatus. The rollers are freed by opening switch 76 controlled by a time switch, pressure mat or photo-electric cell. In a modification the rollers are frictionally locked by raising a "rack" having large friction-faced teeth each of which is pushed between a pair of adjacent rollers. It is stated that the rollers may be controlled by ratchet mechanism for unidirectional rotation.
Patent GB-1228452-A (GB)
IPC: C08F283/01
Filed: 1968-08-27
Abstract: 1,228,452. Unsaturated polyesters. CHEMISCHE WERKE HULS A.G. 27 Aug., 1968 [28 Aug., 1967], No. 40907/68. Heading C3P. A moulding or coating material comprises an unsaturated air-drying polyester containing a diacyl peroxide as a curing catalyst, a cobalt compound in an amount of 0À01 to 3% by weight with reference to the whole of the material as a drying accelerator and a tertiary aromatic amine containing at least one N-hydroxyalkyl group in an amount of 0.01 to 5% by weight with reference to the whole of the material as a curing accelerator. In the examples are used: polyester resins derived from fumaric acid, tetrahydrophthalic anhydride, triethylene and tetraethylene glycols, hydroquinone and styrene; cobalt naphthenate in toluene, dibenzoyl peroxide in dibutyl phthalate, cobalt octoate, N - hydroxy - ethyl - N - ethyl - aniline, N - hydroxyethyl - N - ethyl - p - toluidine, N - N- dimethyl - aniline, N,N - dimethyl - p - toluidine, N,N - bis - (hydroxypropyl) - p - toluidine, and N,N - bis - (hydroxyethyl) - p - toluidine.
Patent GB-1230733-A (GB)
IPC: H04M7/10
Filed: 1969-11-20
Abstract: 1,230,733. Automatic exchange systems. SIEMENS A.G. 20 Nov., 1969 [21 Nov., 1968], No. 56743/69. Heading H4K. In setting up connections between PBX exchanges in a multi-PBX system a calling extension seizes a connecting set A which recruits the services of a hunting selector S to associate a dialled digit store (register-sender) W, the store W being connected on the one hand over switch K to receive digits from the calling extension and being connected on the other hand to a so-called allotter Z which responds to a code on an information multiple Z to determine an initial digit or digits for transmission by the store W. The initial digits identify the wanted PBX and the digits decoded from multiple J may be delivered to store W after reception of digits from the calling extension has commenced. Each connecting set is associated with an exchange line circuit V. The code on multiple J is received in Z on a saturable core matrix M.
Patent GB-1231817-A (GB)
IPC: A62B9/02
Filed: 1968-07-18
Abstract: 1,231,817. Respiratory appliances. BENDIX CORP. 18 July, 1968 [20 July, 1967], No. 34269/68. Heading A5T. [Also in Divisions G2 and G3] In an oxygen regulator for a breathing mask, the gas can pass from inlet chamber 60 via three sonic-flow series restrictions 94, 98, 114 to chamber 91 and thence to atmosphere via passage 122 valve 125 and passage 134. A valve 100 meters gas from between restrictions 94, 98 to atmosphere such that the pressure P 2  at that point remains at a constant level above atmospheric pressure P s . A diaphragm 116 controlling valve 125 responds to the difference between the pressure P c  intermediate restrictions 98, 114 and atmospheric pressure, and this pressure difference increases as atmospheric pressure decreases. Below a preset height, valve 125 remains open and the pressure P 3  in chamber 91 is ambient. Diaphragm 88 responds to a demand at 56 by the user and opens pilot valve 80 to cause a pressure drop behind the main valve 62 whereby inlet pressure opens the latter to supply gas via passages 70, noise suppressor 72 and filter 74. Above the pre-set altitude, P c -P s  tends to close valve 25 and P 3  rises and causes diaphragm 88 to actuate valve 80 and thus valve 62 to pressurise outlet 56, until its pressure equals P 3 , the outlet pressure acting back on diaphragm 88 via passage 92.
Patent GB-1238957-A (GB)
IPC: D04B7/04
Filed: 1968-10-14
Abstract: 1,238,957. Knitting-machines. WIRKMASCHINENBAU KARL-MARX-STADT VEB. 14 Oct., 1968, No. 48586/68. Heading D1C. The narrowing points of a flat machine are mounted in a casing wheel is controlled by movement of the carriage. A motor and clutch controls the movement of the needles and points to effect shogging of the points and loop transfer operations.
Patent GB-1250346-A (GB)
IPC: B01D21/00
Filed: 1968-12-23
Abstract: 1,250,346. Filtering and settling. ECODYNE CORP. 23 Dec., 1968 [27 Dec., 1967], No. 60932/68. Heading B1D. Suspension introduced at 14 is caused to undergo up-and-down motion in a settling tank 32 by an array of baffles while solids settle out by gravity; the liquid is then further treated by filter means 60. The filters are periodically washed, and the contaminated wash liquid is reintroduced into the settling tank at 95. As described, the up-and-down settling motion is caused by concentric baffles 24, 26 surrounding inlet tube 16. Baffles 34-44 prevent turbulence in the lower part of the tank, allowing heavier solids to settle, whereas baffles 42 encourage turbulence in the upper part to keep light solids in suspension. Heavy solids are stirred and collected by a rotary rake 22, discharging at 108; partly purified liquid is collected in a gutter 46, pipe 48, and filtered through annular sand bed 60. (Bed 60 is partitioned by radial walls 52). Filtrate from reservoirs 54 is allowed to backwash the bed sections sequentially by opening valves 82 in turn. Backwash collects in sump 86; at a level sensed by float 88, it is pumped via conduit 94 back to the settling tank.
Patent GB-1251038-A (GB)
IPC: F16C33/08
Filed: 1968-11-01
Abstract: 1,251,038. Bearings. MIRRLEES BLACKSTONE Ltd. 27 Oct., 1969 [1 Nov., 1968], No. 51909/68. Heading F2A. A bearing has flanged half-shells, one flange of one half shell being of greater width and/or thickness than the width and/or thickness of the adjacent flange of the other half-shell. In an embodiment half-shells 13 are provided with flanges 13a and are received in a bearing cap 10 and half-shells 13 are provided with flanges 13b and 13c and are received in a bearing-half 11, the flanges 13c being wider and thicker than the flanges 13a and 13b and being located within an oil-groove 12. In another embodiment halfshells 20, Fig. 2, have flanges 21a located in a reservoir 12 and have flanges 21b, which are thicker than the flanges 21a. Each flange 21b has a portion received in a recess 22 which is formed in a bearing-half 11.
Patent GB-1252837-A (GB)
IPC: G03B1/48
Filed: 1969-08-26
Abstract: 1,252,837. Photographic film holders. G. N. UDDGREN. Aug.26, 1969, No.42468/69. Heading G2A. A film or negative holding device comprises a plate 1 having an aperture 2 therein and two pairs of jaws 3-6 provided on the plate to hold the negative in front of the aperture, the jaws being arranged adjacent opposite edges of the aperture. The pair 5, 6 is mounted for simultaneous displacement towards the pair 3, 4 against the bias of springs 16. The jaw 3 is fixed to the plate 1, while the jaws 4, 6 are pivotable about axes 7, 8 respectively disposed at the ends of jaws 3, 5. In use, the jaws 4, 6 are pivoted upwards from the plane of the plate a cam 19 being moved to the position shown so as to displace the jaws 5, 6 towards the jaws 3, 4. The negative is placed over the aperture with two edge portions contacting the jaws 3, 5. The jaws 4, 6 are then pivoted downwards and locked in position on the jaws 3, 5 by portions 10a of arms 10 engaging portions 4a, 6a of the jaws 4, 6. Lists 11 on the jaws 4, 6 are pressed on to the edges of the negative. The cam 19 is then pivoted clockwise (as seen) thus allowing jaws 5, 6 to move away from jaws 3, 4 under spring action, this movement tensioning the negative to a planar position. Both sides thereof are accessible for the removal of dust particles, without having to remove the negative from the holding device.
Patent GB-1256837-A (GB)
IPC: H03H19/00
Filed: 1970-07-28
Abstract: 1,256,837. Active filters; frequency changing systems; demodulators. LICENTIA PATENTVERWALTUNGS-G.m.b.H. 28 July, 1970 [4 Nov., 1969], No. 36382/70. Headings H3F, H3Q and H3U. In an n-path filter in which each path is provided with an input modulator M 1e , M 2e ... M Ne , a filter F, and an output modulator M 1a , M 2a  ... M Na , means & are provided in each path for mixing a carrier U R (t) with the control signal TG(# 0 ) applied to the input modulators to provide a control signal for the output modulators. The filtered output signal spectrum U a (t) thus lies in a different band from the input spectrum U e (t). If the carrier and control signals are made the same frequency, the circuit functions as a demodulator.